Instrumental Duet Bassoon,Clarinet,Instrumental Duet - Level 4 - Digital Download SKU: A0.968644 Composed by Oscar Lorenzo Fernandez. Arranged by D. Musheff. 20th Century,Concert,Contemporary. Score and parts. 12 pages. D. Musheff #6620015. Published by D. Musheff (A0.968644). Bach meets Brazil in these two-part inventions with a tropical flavor.